diff --git a/README.md b/README.md
index 904cea3..067b198 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
-# XXX
+# jrosset/mbstring-extended
 
-XXX
\ No newline at end of file
+Add “missing” mbstring methods.
+
+Provides:
+- [mb_str_pad](https://www.php.net/manual/function.str-pad.php)
\ No newline at end of file
diff --git a/boostrap.php b/boostrap.php
new file mode 100644
index 0000000..56b3003
--- /dev/null
+++ b/boostrap.php
@@ -0,0 +1,20 @@
+<?php
+
+use jrosset\MbstringExtended;
+
+if (!function_exists('mb_str_pad')) {
+    /**
+     * Multi-bytes implementation for {@see https://www.php.net/manual/function.str-pad.php str_pad}
+     *
+     * @param string      $string     The input string
+     * @param int         $length     The minimum string length
+     * @param string      $pad_string The padding string
+     * @param int         $pad_type   STR_PAD_RIGHT, STR_PAD_LEFT, or STR_PAD_BOTH
+     * @param string|null $encoding   The character encoding or the internal character encoding value is Null
+     *
+     * @return string The padded string
+     */
+    function mb_str_pad (string $string, int $length, string $pad_string = ' ', int $pad_type = STR_PAD_RIGHT, string $encoding = null): string {
+        return MbstringExtended::str_pad($string, $length, $pad_string, $pad_type, $encoding);
+    }
+}
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 982738d..468ec8c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,21 +1,29 @@
 {
-    "name":              "jrosset/xxx",
-    "description":       "XXX",
-    "keywords":          [ ],
+    "name":              "jrosset/mbstring-extended",
+    "type":              "library",
+    "description":       "Add \"missing\" mbstring methods like str_pad",
+    "keywords":          [ "mbstring" ],
 
     "minimum-stability": "stable",
     "require":           {
-        "php": "^7.4 || ^8.0"
+        "php":                       ">=7.1",
+        "symfony/polyfill-mbstring": "^1.27"
+    },
+    "suggest": {
+        "ext-mbstring": "For best performance"
     },
     "autoload":          {
         "psr-4":                 {
             "jrosset\\": "src/"
         },
+        "files":                 [
+            "boostrap.php"
+        ],
         "exclude-from-classmap": [ "tests/" ]
     },
 
     "readme":            "README.md",
-    "homepage":          "https://git.jrosset.ovh/jrosset/XXX",
+    "homepage":          "https://git.jrosset.ovh/jrosset/PhpMbstringExtended",
     "license":           "CC-BY-4.0",
     "authors":           [
         {
@@ -25,9 +33,9 @@
     ],
     "support":           {
         "email":  "jul.rosset@gmail.com",
-        "issues": "https://git.jrosset.ovh/jrosset/XXX/issues",
-        "wiki":   "https://git.jrosset.ovh/jrosset/XXX/wiki",
-        "docs":   "https://git.jrosset.ovh/jrosset/XXX/wiki",
-        "source": "https://git.jrosset.ovh/jrosset/XXX"
+        "issues": "https://git.jrosset.ovh/jrosset/PhpMbstringExtended/issues",
+        "wiki":   "https://git.jrosset.ovh/jrosset/PhpMbstringExtended/wiki",
+        "docs":   "https://git.jrosset.ovh/jrosset/PhpMbstringExtended/wiki",
+        "source": "https://git.jrosset.ovh/jrosset/PhpMbstringExtended"
     }
-}
\ No newline at end of file
+}
diff --git a/src/MbstringExtended.php b/src/MbstringExtended.php
new file mode 100644
index 0000000..c660660
--- /dev/null
+++ b/src/MbstringExtended.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace jrosset;
+
+/**
+ * Class for “missing” mbstring functions
+ */
+final class MbstringExtended {
+    /**
+     * Multi-bytes implementation for {@see https://www.php.net/manual/function.str-pad.php str_pad}
+     *
+     * @param string      $string     The input string
+     * @param int         $length     The minimum string length
+     * @param string      $pad_string The padding string
+     * @param int         $pad_type   STR_PAD_RIGHT, STR_PAD_LEFT, or STR_PAD_BOTH
+     * @param string|null $encoding   The character encoding or the internal character encoding value is Null
+     *
+     * @return string The padded string
+     */
+    public static function str_pad (string $string, int $length, string $pad_string = ' ', int $pad_type = STR_PAD_RIGHT, string $encoding = null): string {
+        $diff = strlen($string) - ($encoding === null ? mb_strlen($string) : mb_strlen($string, $encoding));
+        return str_pad($string, $length + $diff, $pad_string, $pad_type);
+    }
+}
\ No newline at end of file
diff --git a/tests/test.php b/tests/test.php
new file mode 100644
index 0000000..d6a96eb
--- /dev/null
+++ b/tests/test.php
@@ -0,0 +1,5 @@
+<?php
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+echo mb_str_pad('𝄞', 20, '=', STR_PAD_RIGHT, 'UTF-8');